Inconsistent Air Sacs

Discussion in 'Ducks' started by christylynne11, May 21, 2019.

  1. christylynne11

    christylynne11 Chirping

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    I have 26 duck eggs in my incubator, but I had to start lockdown 2 days early because a lot of them have already internally pipped. There are 3 different breeds in the bator (Ancona, Rouen, and Cayuga). The Rouens always hatch first. With 3 different breeds, they usually hatch over a 4 day span. Anyway, I noticed when I put them on lockdown that some of the air sacs are very large whereas others are very small. This occurred in all 3 breeds. What do you do when you have varying levels of air sac size and need to increase the size of some, but not others, at lockdown?? I only have one incubator.
     
  2. Knighstar679

    Knighstar679 Crowing

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    Could some have already started the drawdown?
     
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  3. christylynne11

    christylynne11 Chirping

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    The ones that internally pipped have. But of the ones that haven't, some of them have an air sac the size of day 7 whereas others are the appropriate size for day 28. They are currently at day 23. I raised my temp by half a degree this time and incubated at 100 because the last batch hatched on days 29-32 at 99.5.
     
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  4. Knighstar679

    Knighstar679 Crowing

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  5. Texas Kiki

    Texas Kiki Egg Pusher

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    I would focus on the externally pipped eggs at this point.
    Keep the bator good for them.

    It's possible the others have quit?
     
  6. christylynne11

    christylynne11 Chirping

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    Every one of them still has movement. I tossed the 2 bad eggs in weeks 1 and 2.
     
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  7. christylynne11

    christylynne11 Chirping

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    I had 15 of 17 eggs make it to lockdown last time, and only 1 quit during lockdown. 1 other required assistance. None of those had especially small air sacs during the last 2 weeks. Idk, I guess I'll just have to wait and see what happens.
     
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  8. chickens really

    chickens really Crazy Call Duck Momma

    Then something isn't right in the incubator..Humidity isn't even.
     
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  9. christylynne11

    christylynne11 Chirping

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    Hmmm. That seems obvious, but I kept all of the eggs in the center on the bator and moved the eggs from the outer edge to the middle at every rotation.
     
  10. chickens really

    chickens really Crazy Call Duck Momma

    Well only thing I can think of if air cells are not the same. All eggs hatch the same..
     

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